CN113842149A

CN113842149A - Switchable lead adapter

Info

Publication number: CN113842149A
Application number: CN202111302165.0A
Authority: CN
Inventors: 张超; 张长兴; 成桂铨
Original assignee: SHENZHEN UNIMED MEDICAL SUPPLIES Inc
Current assignee: SHENZHEN UNIMED MEDICAL SUPPLIES Inc
Priority date: 2021-11-04
Filing date: 2021-11-04
Publication date: 2021-12-28
Anticipated expiration: 2041-11-04
Also published as: CN113842149B

Abstract

A switchable lead adapter comprises a first terminal, a second terminal and a switching circuit. The first terminal is connected to the input end of the ECG monitor, the second terminal is connected to the electrocardio lead wire, and the switching circuit can change the communication quantity of the first terminal and the second terminal so as to change the quantity of types of electrocardio signals transmitted, so that the switchable lead adapter in the embodiment of the invention is suitable for lead main cables with different lead quantities, does not need to be provided with a plurality of main cables, can avoid misuse and is convenient to use.

Description

Switchable lead adapter

Technical Field

The invention relates to the technical field of medical instruments, in particular to a switchable lead adapter.

Background

For each large and medium-sized hospital, precious human resources such as doctors and nurses are limited, and under many conditions, medical staff and patients are in one-to-many relationship, so that the medical staff cannot accompany the patients in clinic, and the electrocardiograph monitor cannot record all vital signs of the patients at all times just in close-fitting monitoring of the patients for 24 hours, capture abnormity and send out an alarm. Therefore, the use of the ECG monitor is imperative for medical personnel.

When the existing electrocardiogram adaptive system is matched with a corresponding multifunctional monitor for use, the 3-lead main cable needs to be connected correspondingly when the 3-lead main cable is used, and the 5-lead main cable or the 6-lead main cable needs to be connected correspondingly when the 5-lead main cable or the 6-lead main cable is used, so that a terminal user needs to be provided with multiple main cables, the use cost is high, the risk of misuse exists, and the use is inconvenient.

Disclosure of Invention

In order to solve the technical problem, the application provides a switchable lead adapter.

According to a first aspect, there is provided in an embodiment a switchable lead adapter comprising:

at least two first terminals for connection to an input of an ECG monitor;

at least two second terminals for connecting to an electrical lead wire;

a switching circuit connecting the first terminal and the second terminal, the switching circuit including a first communication mode in which a number of communications between the first terminal and the second terminal is less than a number of communications between the first terminal and the second terminal in the second communication mode, and a second communication mode.

In an embodiment, the switching circuit includes a first line, a second line and a control line, two ends of the first line and the second line are respectively connected with the first terminal and the second terminal, the control line is connected with the second line, and the control line is used for controlling on-off of the second line; in the first communication mode, the first line is communicated, and in the second communication mode, the first line and the second line are both communicated.

In one embodiment, the second line has at least two. An anti-shake circuit is connected between at least two second lines, the anti-shake circuit is connected in the first connection mode, and the anti-shake circuit is disconnected in the second connection mode.

In one embodiment, the second line has at least two, the second line is connected to two first terminals and a second terminal, the two first terminals connected to the second line are short-circuited in the first connection mode, the two first terminals connected to the second line are disconnected in the second connection mode, and one of the two first terminals connected to the second line is connected to the second terminal.

In one embodiment, a control switch is disposed in at least one of the second terminals connected to the second line, and the control switch is used for triggering the control circuit to switch the communication mode of the switching circuit.

In one embodiment, the control switch comprises: the push rod structure, the elastic reset piece, the pressing piece and the change-over switch; the switch is connected to the control circuit; the pressing piece is arranged at one end of the push rod structure, the other end of the push rod structure is inserted into the second terminal, and the push rod structure can slide in the second terminal; when the electrocardio lead wire is connected with the second terminal provided with the control switch, the push rod structure is pushed, the push rod structure pushes the pressing piece, and the pressing piece presses the switch to trigger the control circuit; the elastic resetting piece acts on the push rod structure and is used for driving the push rod structure to reset.

In an embodiment, a limiting end surface is provided on the push rod structure to limit the stroke of the push rod structure in the second terminal.

In an embodiment, the control switch further includes a limiting plate, a through hole is formed in the limiting plate, and the push rod structure penetrates through the through hole to be connected with the pressing piece; the elastic reset piece is a spring, the spring sleeve is arranged on the push rod structure, one end of the spring is abutted to the push rod structure, and the other end of the spring is abutted to the limiting plate.

In one embodiment, the method further comprises: an indicator light; the indicator light is used for indicating the communication mode of the switching circuit.

In one embodiment, the method further comprises: a manual control switch; the manual control switch is used for manually switching the communication mode of the switching circuit.

According to the switchable lead adapter of the embodiment, the switchable lead adapter comprises at least two first terminals and at least two second terminals, and the switching circuit connected with the first terminals and the second terminals can change the communication mode, so that the communication quantity of the first terminals and the second terminals is changed, and the quantity of the types of electrocardiosignals to be transmitted is changed, the switchable lead adapter of the embodiment is suitable for different main cables of lead wires, various main cables do not need to be equipped, misuse can be avoided, and the switchable lead adapter is convenient to use.

Drawings

Figure 1 is a schematic diagram of a switchable lead adapter according to one embodiment;

figure 2 is a schematic diagram of a control switch of the switchable lead adapter according to an embodiment;

figure 3 is a schematic connection diagram illustrating a first connection mode state of the switchable lead adapter according to an embodiment;

figure 4 is a schematic diagram illustrating a connection of the switchable lead adapter in a second pass-through mode according to an embodiment;

figure 5 is a schematic structural diagram of a switchable lead adapter according to an embodiment;

figure 6 is a schematic diagram illustrating a pin state of a receptacle connector of the switchable lead adapter in accordance with one embodiment;

figure 7 is a schematic diagram illustrating a pin state of the monitor connector in a first mode of connection state of the switchable lead adapter in accordance with one embodiment;

figure 8 is a schematic diagram illustrating the pin state of the monitor connector in a second pass-through mode state of the switchable lead adapter in accordance with one embodiment;

figure 9 is a schematic diagram of a switching circuit of a switchable lead adapter in accordance with one embodiment;

figure 10 is a schematic structural diagram of a switchable lead adapter according to yet another embodiment;

figure 11 is a schematic diagram illustrating a pin status of a receptacle connector of a switchable lead adapter according to yet another embodiment;

figure 12 is a schematic diagram of the pin state of the monitor connector in the first on mode state of the switchable lead adapter in accordance with yet another embodiment;

figure 13 is a schematic diagram of the pin state of the monitor connector in the second pass-through mode state of the switchable lead adapter in accordance with yet another embodiment;

figure 14 is a schematic diagram of a switching circuit of a switchable lead adapter according to yet another embodiment;

figure 15 is a schematic structural diagram of a switchable lead adapter according to another embodiment;

figure 16 is a schematic diagram illustrating a pin status of a receptacle connector of a switchable lead adapter according to another embodiment;

figure 17 is a schematic diagram of the pin state of the monitor connector in the first mode of connection of the switchable lead adapter in accordance with an alternative embodiment;

figure 18 is a schematic diagram of the pin state of the monitor connector in the second pass-through mode state of the switchable lead adapter in accordance with an alternative embodiment;

figure 19 is a schematic diagram of a switching circuit of a switchable lead adapter according to another embodiment;

FIG. 20 is a schematic diagram of an electrocardiographic monitoring device in an embodiment.

Detailed Description

The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.

Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).

In an embodiment of the present invention, a switchable lead adapter includes a first terminal, a second terminal, and a switching circuit. The first terminal is connected to the input end of the ECG monitor, the second terminal is connected to the electrocardio lead wire, and the switching circuit can change the communication quantity of the first terminal and the second terminal so as to change the quantity of types of electrocardio signals transmitted, so that the switchable lead adapter in the embodiment of the invention is suitable for lead main cables with different lead quantities, does not need to be provided with a plurality of main cables, can avoid misuse and is convenient to use.

The present application is illustrated by the following specific examples:

the first embodiment is as follows:

as shown in fig. 1 to 4, in an embodiment of the present application, a switchable lead adapter is provided, which includes an ECG adapter, a socket connector 2 and a switching circuit. The ECG adapter in this embodiment comprises a monitor connector 1, the monitor connector 1 being provided with at least two first terminals for connection to the input of the ECG monitor. At least two second terminals are arranged on the socket connector 2 and are used for being connected to an electrocardio lead wire. The switching circuit is connected with the first terminal and the second terminal, and comprises a first communication mode and a second communication mode, wherein the number of the first terminal and the second terminal in the first communication mode is less than that in the second communication mode, so that different numbers of electrocardiosignal types are transmitted.

In this embodiment, the switching circuit includes a first line, a second line, and a control line, two ends of the first line and the second line are respectively connected to the first terminal and the second terminal, the control line is connected to the second line, the control line is configured to control on/off of the second line, the first line is communicated in the first communication mode, and the first line and the second line are both communicated in the second communication mode.

In this embodiment, a control switch 5 is disposed in at least one second terminal connected to the second line, and the control switch 5 is used for triggering the control circuit to switch the connection mode of the circuit. When the electrocardio lead is connected with the second terminal provided with the control switch 5, the control switch 5 triggers the control circuit, and the control circuit controls the second line to be communicated, thereby realizing the communication mode switching of the switching circuit. In this embodiment, the second terminal is provided on the receptacle connector 2. In this embodiment, when the few conductive connection wires 3 are connected to the receptacle connector 2, the inserted conductive connection wires do not contact the control switch 5, the second circuit is not connected, the switching circuit is in the first connection mode, and when the many conductive connection wires 4 are connected to the receptacle connector 2, the inserted conductive connection wires contact the control switch 5, the second circuit is connected, and the switching circuit is in the second connection mode.

In this embodiment, the control switch 5 includes a push rod structure 51, an elastic reset component, a pressing component 53 and a switch 54, the switch 54 is connected to the control circuit and used for triggering the control circuit, the pressing component 53 is installed at one end of the push rod structure 51, the other end of the push rod structure 51 is inserted into the socket connector 2, the push rod structure 51 can slide in the socket connector 2, the push rod structure 51 is pushed when the multi-lead plug 4 is inserted into the socket connector 2, the push rod structure 51 pushes the pressing component 53, and the pressing component 53 presses the switch 54 to trigger the control circuit, so that the second circuit is connected, and the connection mode of the switch circuit is switched. The elastic restoring member acts on the push rod structure 51 for driving the push rod structure 51 to restore. In one embodiment, the pressing member 53 is an elastic material.

The mode that change over switch 54 activation control circuit so that second line intercommunication is including using the relay, the wave band switch, the contactor etc, in this embodiment, change over switch 54 is a many position switch, be equipped with a plurality of normally open or normally closed switches on the second line, change over switch 54 is used for switching the on-off state of normally open or normally closed switch, when change over switch 54 is pressed, the on-off state of normally open or normally closed switch on the second line exchanges, the second line intercommunication, when change over switch 54 resets, the on-off state of normally open or normally closed switch resets on the second line, the second line break-make.

In this embodiment, the push rod structure 51 is provided with a limiting end surface to determine the stroke of the push rod structure 51 in the receptacle connector 2, so as to prevent the push rod structure 51 from being dislocated.

In this embodiment, the control switch 5 further includes a limiting plate 55, the limiting plate 55 is fixed, a through hole is formed in the limiting plate 55, and the push rod structure 51 passes through the through hole and is connected with the pressing member 53. In this embodiment, the spring return is spring 52, and spring 52 overlaps and establishes on push rod structure 51, and spring 52 one end and push rod structure 51 butt, the other end and the limiting plate 55 butt of spring 52 make spring 52 can act on push rod structure 51 on the one hand and make push rod structure 51 reset, on the other hand prevents push rod structure 51 dislocation.

Example two:

as shown in fig. 5 to 9, in an embodiment of the present application, there is provided a switchable lead adapter, which includes a monitor connector 1, a socket connector 2, a switching circuit and a control switch 5. The control switch 5 in the present embodiment may be the control switch described in the first embodiment. In this embodiment, 10 first terminals are disposed on the

monitoring connector

1, 5 second terminals are disposed on the socket connector 2, all the first terminals and the second terminals are connected to a pin bit on the switching circuit, and the pin bit is referred to as the first terminal and the second terminal in the following description.

In this embodiment, monitor connector 1 includes 10 pin bits,

pin bits

16, 17, 18, 19, and 110 are grounded, and pin

bits

15, 14, 13, 12, and 11 are signal output pin bits of RL/N, RA/R, LA/L, LL/F, V/C, respectively. The socket connector 2 comprises 5 pin bits, wherein the

pin bits

1e, 1d, 1C, 1b and 1a are respectively RL/N, LA/L, LL/F, RA/R, V/C signal input pin bits, and meanwhile, the

pin bits

1e, 1d, 1C, 1b and 1a are grounded. First lines are connected between

pin bits

12 and 1c, 13 and 1d, and 14 and 1b, second lines are connected between

pin bits

11 and 1a, and between

pin bits

15 and 1e, and anti-shake circuits are connected between

pin bits

15 and 1 e. The second line and the anti-shake circuit are connected to the control line, and the changeover switch 54 is connected to the control line.

In this embodiment, change over switch 54 is a many switches, be equipped with normally open switch on the second line, anti-shake circuit is last to have connect anti-shake resistance R1 and to be equipped with normally closed switch, change over switch 54 is used for switching the switching state of normally opening or normally closed switch, when change over switch 54 is pressed, normally open and normally closed switch's switching state interchange on second line and the anti-shake circuit, the second line intercommunication, anti-shake circuit is out of work, when change over switch 54 resets, normally open and normally closed switch's switching state resets on second line and the anti-shake circuit, the second line break-make, anti-shake circuit work.

In this embodiment, the receptacle connector 2 may be connected to a 3-lead wire or a 5-lead wire, the 3-lead wire is connected to the

pin bits

1b, 1c, and 1d, and at this time, the control switch 5 does not trigger the control circuit, and the switching circuit is in the first communication mode. The 5 conducting wire is connected with the

pin bits

1a, 1b, 1c, 1d and 1e, at the moment, the control switch 5 triggers the control circuit, and the switching circuit is in a second communication mode.

In this embodiment, the control switch 5 is provided in the pin bit 1 e. When 3 lead line plug inserts, control switch 5 is not triggered, at this moment, first circuit and anti-shake circuit intercommunication, switching circuit is first intercommunication mode, also be

pin bit

12 and 1c intercommunication,

pin bit

13 and 1d intercommunication,

pin bit

14 and 1b intercommunication, connect anti-shake resistance R1 between

pin bit

11 and 15, in this embodiment, anti-shake resistance R1 resistance bit 130 MOmega,

pin bit

16, 17, 18, 19, 110 ground shield, lead adapter transmission RA/R, LA/L and LL/F signal. When the 5 leading wire plug is inserted, the control switch 5 is triggered, at the moment, the first line is communicated with the second line, the anti-shake circuit is disconnected, the switching circuit is in a second communication mode, namely, the pin bit 11 is communicated with the 1a, the pin bit 12 is communicated with the 1C, the pin bit 13 is communicated with the 1d, the pin bit 14 is communicated with the 1b, the pin bit 15 is communicated with the 1e, and the lead adapter transmits RL/N, RA/R, LA/L, LL/F and V/C signals.

In this embodiment, the switchable lead wire adaptor is further provided with an indicator lamp 6, the indicator lamp 6 is used for indicating a communication mode of the switching circuit, i.e. a connection condition of the connector 2 and the lead wire plug, for example, when the 3 lead wire plug and the 5 lead wire plug are inserted, the indicator lamp emits light with different colors for indication, and when the connection is abnormal, the indicator lamp flickers to prompt a user to intervene.

In this embodiment, the switchable conductive line adaptor is further provided with a manual control switch 7, and the manual control switch 7 is used for manually switching the connection mode of the switching circuit.

Example three:

as shown in fig. 10 to 14, in an embodiment of the present application, there is provided a switchable lead adapter, which includes a monitor connector 1, a socket connector 2, a switching circuit and a control switch 5. The control switch 5 in the present embodiment may be the control switch described in the first embodiment. In this embodiment, 8 first terminals are disposed on the

monitoring connector

1, 6 second terminals are disposed on the socket connector 2, all the first terminals and the second terminals are connected to a pin bit on the switching circuit, and the pin bit is referred to as the first terminal and the second terminal in the following description.

In this embodiment, the monitor connector 1 includes 8 pin bits, the pin bit 21 is connected to the ground, the pin bit 27 is shielded to the ground, and the

pin bits

22, 23, 24, 25, 26, and 28 are RL/N, LL/F, RA/R, V5/C5, V4/C4, and LA/L signal output pin bits, respectively. The socket connector 2 comprises 6 pin bits, wherein the

pin bits

2a, 2b, 2C, 2e, 2f and 2g are respectively V5/C5, V4/C4, RA/R, LL/F, LA/L, RL/N signal input pin bits, and meanwhile, the

pin bits

2a, 2b, 2C, 2e, 2f and 2g are grounded. First lines are connected between the

pin bits

23 and 2e, 24 and 2c, 28 and 2f, second lines are connected between the

pin bits

22 and 2g, 25 and 2a, 26 and 2b, and anti-shake circuits are connected between the

pin bits

21 and 27. The second line and the anti-shake circuit are connected to the control line, and the changeover switch 54 is connected to the control line.

In this embodiment, change over switch 54 is a many switches, be equipped with normally open switch on the second line, anti-shake circuit is last to have connect anti-shake resistance R2 and to be equipped with normally open switch, change over switch 54 is used for switching the on-off state of normally open switch, when change over switch 54 is pressed, normally open switch is closed on second circuit and the anti-shake circuit, the second line intercommunication, anti-shake circuit work, when change over switch 54 resets, normally open switch disconnection on second circuit and the anti-shake circuit, the second line break-make, anti-shake circuit is out of work.

In this embodiment, the receptacle connector 2 may be connected to a 3-lead wire or a 6-lead wire, the 3-lead wire is connected to the

pins

2c, 2e, and 2f, and at this time, the control switch 5 does not trigger the control circuit, and the switching circuit is in the first communication mode. The 6 conducting wires are connected with the

pin bits

2a, 2b, 2c, 2e, 2f and 2g, at the moment, the control switch 5 triggers the control circuit, and the switching circuit is in a second communication mode.

In this embodiment, the control switch 5 is provided in the pin bit 2 g. When the 3 lead wire plug is inserted, the control switch 5 is not triggered, at the moment, the first line is communicated, the switching circuit is in a first communication mode, namely, the pin bit 23 is communicated with the 2e, the pin bit 24 is communicated with the 2c, the pin bit 28 is communicated with the 2f, the pin bit 27 is grounded and shielded, and the lead adapter transmits LL/F, RA/R and LA/L signals. When the 6 lead wire plug is inserted, the control switch 5 is triggered, at the moment, the first line and the second line are communicated with the anti-shake circuit, the switching circuit is in a second communication mode, namely the pin bits 22 are communicated with the 2g, the pin bits 23 are communicated with the 2e, the pin bits 24 are communicated with the 2C, the pin bits 25 are communicated with the 2a, the pin bits 26 are communicated with the 2b, the pin bits 28 are communicated with the 2f, the pin bits 27 are grounded and shielded, and the anti-shake resistor R2 is connected between the

pin bits

21 and 27.

In this embodiment, the switchable lead wire adaptor is further provided with an indicator lamp 6, the indicator lamp 6 is used for indicating a communication mode of the switching circuit, i.e. a connection condition of the connector 2 and the lead wire plug, for example, when the 3 lead wire plug and the 6 lead wire plug are inserted, the indicator lamp emits light with different colors for indication, and when the connection is abnormal, the indicator lamp flickers to prompt a user to intervene.

Example four:

as shown in fig. 15 to 19, in an embodiment of the present application, there is provided a switchable lead adapter, which includes a monitor connector 1, a socket connector 2, a switching circuit and a control switch 5. The control switch 5 in the present embodiment may be the control switch described in the first embodiment. In this embodiment, 10 first terminals are disposed on the

monitoring connector

In this embodiment, the monitor connector 1 includes 10 pin bits, the

pin bits

31, 32, 33, 34, 35 are the signal output pin bits of RL/N, LA/L, LL/F, RA/R, V/C, respectively, and the

pin bits

37, 38, 39 are grounded. Socket connector 2 includes 5 pin bits, and pin

bits

3e, 3d, 3C, 3b, and 3a are signal input pin bits of RL/N, LA/L, LL/F, RA/R, V/C, respectively. First lines are connected between

pin bits

32 and 3d, 33 and 3c, and between 34 and 3b, second lines are connected between

pin bits

31, 36 and 3e, and second lines are connected between

pin bits

35, 310 and 3 a. The second line is connected to the control line, and the changeover switch 54 is connected to the control line.

In this embodiment, change over switch 54 is a multiposition switch, is equipped with normally open and normally closed switch on the second line, and change over switch 54 is used for switching the open-close state of normally open and normally closed switch, and when change over switch 54 was pressed, normally open and normally closed switch's open-close state interchange on the second line, second line intercommunication, when change over switch 54 resets, the open-close state of normally open and normally closed switch on the second line resets, and second line break-make.

pins

3b, 3c, and 3d, and at this time, the control switch 5 does not trigger the control circuit, and the switching circuit is in the first communication mode. The 5 lead wire plug is connected with the

pin bits

3e, 3d, 3c, 3b and 3a, at the moment, the control switch 5 triggers the control circuit, and the switching circuit is in a second communication mode.

In this embodiment, control switch 5 locates in pin bit 3e, when 3 lead the line plug and insert, control switch 5 is not triggered, at this moment, first circuit intercommunication, the switching circuit is first intercommunication mode, also pin

bit

32 and 3d intercommunication,

pin bit

33 and 3c intercommunication,

pin bit

34 and 3b intercommunication,

pin bit

31 and 36 short circuit,

pin bit

35 and 310 short circuit,

pin bit

37, 38, 39 ground connection shielding, lead the line adapter and transmit LA L, LL/F and RA/R signal. When the 5 leading wire plug is inserted, the control switch 5 is triggered, at the moment, the first line is communicated with the second line, namely the

pin bits

31 and 3e are communicated, the

pin bits

32 and 3d are communicated, the pin bits 33 and 3C are communicated, the

pin bits

34 and 3b are communicated, the

pin bits

35 and 3a are communicated, the

pin bits

36, 37, 38, 39 and 310 are grounded and shielded, and the lead adapter transmits RL/N, RA/R, LA/L, LL/F and V/C signals.

Example five:

referring to fig. 20, an embodiment of the present application provides an electrocardiograph monitoring device, which includes an electrocardiograph monitor 100, an electrocardiograph lead plug 200, and a switchable lead adapter 300 according to any of the embodiments of the present application.

According to the changeable adapter that leads in above-mentioned embodiment, because the design of switching circuit and utilize empty pin bit to set up control switch, do not trigger control switch when few lead the line plug and insert the use, when the line plug that leads more inserts the use, control switch will switch a plurality of switching states of normally opening or normally closed switch for switching circuit can be automatic according to the switching intercommunication condition of the line plug that leads of male, is applicable to the line plug that leads of different quantity that leads, need not be equipped with multiple main cable, can avoid misuse simultaneously, convenient to use.

The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.

Claims

1. A switchable lead adapter, comprising:

at least two first terminals for connection to an input of an ECG monitor;

at least two second terminals for connecting to an electrical lead wire;

2. The switchable lead adapter of claim 1, wherein the switching circuit comprises a first line, a second line and a control line, wherein both ends of the first line and the second line are respectively connected with the first terminal and the second terminal, the control line is connected with the second line, and the control line is used for controlling the on/off of the second line; in the first communication mode, the first line is communicated, and in the second communication mode, the first line and the second line are both communicated.

3. The switchable lead adapter of claim 2 wherein said second line has at least two. An anti-shake circuit is connected between at least two second lines, the anti-shake circuit is connected in the first connection mode, and the anti-shake circuit is disconnected in the second connection mode.

4. The switchable lead adapter of claim 2 wherein said second line has at least two, said second line being connected to two of said first terminals and a second terminal, said two first terminals connected to said second line being shorted in said first connected mode, said two first terminals connected to said second line being disconnected in said second connected mode, one of said two first terminals connected to said second line being in communication with said second terminal.

5. A switchable lead adapter according to claim 2, wherein a control switch is provided in at least one of said second terminals connected to said second line, said control switch being adapted to trigger said control circuit to switch the pass-through mode of said switching circuit.

6. The switchable lead adapter of claim 5, wherein the control switch comprises: the push rod structure, the elastic reset piece, the pressing piece and the change-over switch; the switch is connected to the control circuit; the pressing piece is arranged at one end of the push rod structure, the other end of the push rod structure is inserted into the second terminal, and the push rod structure can slide in the second terminal; when the electrocardio lead wire is connected with the second terminal provided with the control switch, the push rod structure is pushed, the push rod structure pushes the pressing piece, and the pressing piece presses the switch to trigger the control circuit; the elastic resetting piece acts on the push rod structure and is used for driving the push rod structure to reset.

7. The switchable lead adapter of claim 4 wherein said pushrod structure is provided with a limiting end surface to limit the travel of said pushrod structure within said second terminal.

8. The switchable lead adapter of claim 5, wherein the control switch further comprises a limiting plate, a through hole is formed in the limiting plate, and the push rod structure passes through the through hole and is connected to the pressing member; the elastic reset piece is a spring, the spring sleeve is arranged on the push rod structure, one end of the spring is abutted to the push rod structure, and the other end of the spring is abutted to the limiting plate.

9. The switchable lead adapter of any of claims 1 to 8, further comprising: an indicator light; the indicator light is used for indicating the communication mode of the switching circuit.

10. The switchable lead adapter of claim 9, further comprising: a manual control switch; the manual control switch is used for manually switching the communication mode of the switching circuit.